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The Dragino LWL04 is a battery-powered LoRaWAN water leak sensor designed for smart buildings and industrial monitoring. It detects water contact through three metal probes and transmits alerts to a LoRaWAN network server. The device supports LoRaWAN 1.0.3, OTAA network activation with unique device keys, and wireless firmware updates. These are documented security-relevant capabilities. However, the public documentation does not fully establish the security of local credential storage, physical tamper resistance, management-platform password policies, brute-force protection or security audit logging. Security conclusions about the management platform depend on the selected LoRaWAN network server and its configuration. Unknown controls should not automatically be treated as absent. References: https://wiki.dragino.com/docs/LoRaWAN-End-Node/door-water-leak-contact-sensors/lwl04/ https://www.dragino.com/products/lorawan-nb-iot-door-sensor-water-leak/item/344-lwl04.html
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